Delta EA - Pondmaster 40 UV Light Bulb for Germicidal Water Treatment Select Product Below:Replacement Electrical Ballast Output uW/cm^2 @ 1m: 100

Output uW/cm^2 @ 1m: 100

This is why we recommend that you replace the light bulb annually

Guaranteed Replacement Ultraviolet (UV) Bulb - 4 Pin - 40 Watts - 33 Inch Length Lamp - Worry Free Performance for 1 Year

Wattage: 1200 Watts

and fog lights

Delta EA - Pondmaster 40 UV Light Bulb for Germicidal Water Treatment Select Product Below:Replacement Electrical Ballast Output uW/cm^2 @ 1m: 100Guaranteed Replacement Ultraviolet (UV) Bulb 4 Pin on a Single End 41 Watts 33. 2 Inch Length Lamp Worry Free Performance for 1 Year Product Overview: Specifications: Compatible With: Wattage: 41 Watts Wavelength range: 254NM Length: 33. 2 inches (843. 3mm) Base: 4 pin on a single end Base Material: Ceramic Bulb Shape: T5 Average Lifespan: Up to 10,000 hours Delta EA Pondmaster 40 UV Light Bulb is 41 watts and 100% compatible with germicidal OEM Water